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7
Changing the batteries
If the symbol for empty batteries ( ) appears in the display or in the app,
please replace the used batteries by two new LR03/micro/AAA batteries.
You must observe the correct battery polarity.
To replace the batteries of the wall thermostat, please proceed as follows:
•
Once mounted, the electronic unit (B) can easily be pulled out of
the frame (A) and removed from the mounting plate (F). To re-
move the electronic unit from the frame, take hold of the sides of
the electronic unit and pull it out (see figure 6). You do not need
to open the device.
•
Turn the electronic unit over to remove or insert the batteries.
•
Insert two new 1.5 V LR03/micro/batteries into the battery com-
partment, making sure that you insert them the right way round
(see figure 7).
•
Put the electronic unit back into the frame. Make sure that "TOP"
and the arrows on the back side of the electronic unit point up-
wards and that the clips on the mounting plate latch into the
openings on the electronic unit.
•
Please pay attention to the flashing signals of the device LED
while inserting the batteries (see see „8.4 Error codes and flashing
sequences" on page 39).
Once the batteries have been inserted, the wall thermostat will perform
a self-test/restart (approx. 2 seconds). Afterwards, initialisation is carried
out. The test display will indicate that initialisation is complete: orange
and green lighting.
Caution! There is a risk of explosion if the batteries are not replaced
correctly. Never recharge non-rechargeable batteries. Do not throw
the batteries into a fire. Do not expose batteries to excessive heat.
Do not short-circuit batteries. Doing so will present a risk of explo-
sion.
Changing the batteries
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